Just finishing swapping a L32 into a 02 GT and need to tune the pcm. L32 came out of my 99 GTP which got written off after asshat ran a red on me. L32 was running an Overkill tune on a 03 pcm (because gtp had 05 gtp tranny) --- I would like to transfer the engine tune to the GT's pcm (will be using the GT tranny). I've got a HPTuner but have never got around to figuring out how to use it. The GTP is gone, so in order to read OverKill tune-- can I put the GTP's pcm in the GT, then copy the Overkill tune to my laptop? Then after, put the GT pcm back in and transfer Overkill tune from the laptop to the GT pcm? I read that you can use the comparison feature in HPT to overwrite one tune to another...is this right and is it hard to do? Anyone know of a walkthru or video on how to do this?